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学者姓名：杨丽阳
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Abstract ：
The burial of sediment organic matter (SOM) in the estuary and shelf plays an important role in the global carbon cycle. However, it is challenging to determine the source, composition, and burial of SOM in the coastal sea, especially at the molecular level. This was explored in the coastal area outside the largest Yangtze River of China with multiple techniques including elemental and stable isotopic analysis, absorption spectroscopy, fluorescence excitation-emission matrices coupled with parallel factor analysis (EEMs-PARAFAC), and ultra-high resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). The end-member mixing analysis based on δ13C and δ15N showed a dominance of marine contribution (up to 70%) at most stations while the terrestrial contribution increased to >55% nearshore in summer at a high fluvial sediment flux. This was consistent with the offshore decreasing humic-like C1 and C2, humification index (HIX), %lignin-like compounds, and %CHO but increasing tryptophan-like C3, biological index (BIX), %protein-like compounds, and %CHOS from EEMs-PARAFAC and FT-ICR-MS analysis. The %clay correlated positively with SOM content, HIX, %lignin-like compounds, O/C, and modified aromaticity index (AImod) but correlated negatively with %C3, H/C, and the relative abundance of labile formulas (MLBL), while %silt showed contrasting correlations. These results indicated the fine clay sediments adsorbed more humified, aromatic, oxygenated, and terrestrial compounds that were probably more resistant to biodegradation and thus had a higher burial efficiency than those on the silty sediments. Principal component analysis based on SOM indices further revealed different characteristics of SOM in the nearshore, northern offshore, and southern offshore regions, which were probably dependent on the delivery by local current systems. Overall, these findings contributed to unraveling the source and molecular composition of SOM associated with different grain size sediments and local current delivery, which are fundamental for understanding the factors underlying carbon burial in the complex coastal environment. © 2024 Elsevier Ltd
Keyword ：
Aromatization Aromatization Atomic emission spectroscopy Atomic emission spectroscopy Biological materials preservation Biological materials preservation Chlorine compounds Chlorine compounds Electron cyclotron resonance Electron cyclotron resonance Ethanol Ethanol Explosives detection Explosives detection Fourier transform infrared spectroscopy Fourier transform infrared spectroscopy Inductively coupled plasma mass spectrometry Inductively coupled plasma mass spectrometry Synthetic resins Synthetic resins
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| GB/T 7714 | Zhang, Wenyi , Wang, Yufan , Fang, Futao et al. Characterization of sediment organic matter in the outer Yangtze River Estuary using stable isotopes, optical techniques, and FT-ICR-MS: Implications for the carbon burial mechanism [J]. | Water Research , 2024 , 267 . |
| MLA | Zhang, Wenyi et al. "Characterization of sediment organic matter in the outer Yangtze River Estuary using stable isotopes, optical techniques, and FT-ICR-MS: Implications for the carbon burial mechanism" . | Water Research 267 (2024) . |
| APA | Zhang, Wenyi , Wang, Yufan , Fang, Futao , Zhuang, Wan-E , Yang, Liyang , Zhu, Zhuoyi . Characterization of sediment organic matter in the outer Yangtze River Estuary using stable isotopes, optical techniques, and FT-ICR-MS: Implications for the carbon burial mechanism . | Water Research , 2024 , 267 . |
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Dissolved organic matter (DOM) is important in determining the drinking water treatment and the supplied water quality. However, a comprehensive DOM study for the whole water supply system is lacking and the potential effects of secondary water supply are largely unknown. This was studied using dissolved organic carbon (DOC), absorption spectroscopy, and fluorescence excitation -emission matrices -parallel factor analysis (EEMPARAFAC). Four fluorescent components were identified, including humic-like C1-C2, tryptophan-like C3, and tyrosine -like C4. In the drinking water treatment plants, the advanced treatment using ozone and biological activated carbon (O3-BAC) was more effective in removing DOC than the conventional process, with the removals of C1 and C3 improved by 17.7%-25.1% and 19.2%-27.0%. The absorption coefficient and C1-C4 correlated significantly with DOC in water treatments, suggesting that absorption and fluorescence could effectively track the changes in bulk DOM. DOM generally remained stable in each drinking water distribution system, suggesting the importance of the treated water quality in determining that of the corresponding network. The optical indices changed notably between distribution networks of different treatment plants, which enabled the identification of changing water sources. A comparison of DOM in the direct and secondary water supplies suggested limited impacts of secondary water supply, although the changes in organic carbon and absorption indices were detected in some locations. These results have implications for better understanding the changes of DOM in the whole water supply system to help ensure the supplied water quality.
Keyword ：
Dissolved organic matter Dissolved organic matter Drinking water treatment Drinking water treatment Fluorescence excitation -emission matrices Fluorescence excitation -emission matrices Parallel factor analysis Parallel factor analysis Water supply system Water supply system
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| GB/T 7714 | Lin, Jinjin , Yang, Liyang , Zhuang, Wan-E et al. Tracking the changes of dissolved organic matter throughout the city water supply system with optical indices [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2024 , 358 . |
| MLA | Lin, Jinjin et al. "Tracking the changes of dissolved organic matter throughout the city water supply system with optical indices" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 358 (2024) . |
| APA | Lin, Jinjin , Yang, Liyang , Zhuang, Wan-E , Wang, Yue , Chen, Xiaochen , Niu, Jia . Tracking the changes of dissolved organic matter throughout the city water supply system with optical indices . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2024 , 358 . |
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Evaluating the distribution and sea-air fluxes of dissolved methane (CH4) in mariculture areas is important for understanding how aquaculture contributes to regional CH4 emissions into the atmosphere.Seasonal field surveys conducted in 2023 were used to analyze the temporal and spatial variation of CH4 concentrations in surface water and CH4 air-sea flux in a typical aquaculture system in Sansha Bay, Fujian Province.The results showed that dissolved CH4 concentrations ranged from 9.91 to 609.22 nmol/L, with corresponding air-sea fluxes between 3.46 to 1 188.15 μmol/(m2·d).Temporally, the CH4 air-sea fluxes were higher in summer and autumn compared to spring and winter.Spatially, CH4 concentrations and air-sea fluxes decreased consistently from the estuary to the bay mouth, with the highest values in the estuarine aquaculture area and the lowest in the bay mouth aquaculture area.Correlation analysis showed that aquacultural activities and terrestrial runoff inputs contributed to the spatiotemporal distribution of CH4 concentrations within the bay.In the macroalgae cultivation zones, CH4 production and emissions during farming periods were significantly lower than during non-farming periods.Additionally, the residual feed and feces generated by fish in cages may result in increased CH4 emissions.Notably, CH4 emissions peaked in summer, due to enhanced aquaculture activities and runoff inputs during the wet season.Future work should focus on investigating CH4 air-sea fluxes in mariculture areas to provide scientific support for CH4 control and emission reduction in aquaculture. © 2024 Science China Press. All rights reserved.
Keyword ：
Air-sea flux Air-sea flux Aquaculture Aquaculture Dissolved methane Dissolved methane Environmental factors Environmental factors Sansha Bay Sansha Bay Spatio-temporal distribution Spatio-temporal distribution
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| GB/T 7714 | Lei, L. , Wang, F. , Zang, K. et al. Research on Air-sea Flux and Influencing Factors of Methane in a Typical Mariculture Along the Southeastern Coast of China: the Sansha Bay; [中国东南沿海典型养殖海湾：三沙湾海-气界面甲烷扩散通量及影响因素研究] [J]. | Advances in Earth Science , 2024 , 39 (11) : 1156-1168 . |
| MLA | Lei, L. et al. "Research on Air-sea Flux and Influencing Factors of Methane in a Typical Mariculture Along the Southeastern Coast of China: the Sansha Bay; [中国东南沿海典型养殖海湾：三沙湾海-气界面甲烷扩散通量及影响因素研究]" . | Advances in Earth Science 39 . 11 (2024) : 1156-1168 . |
| APA | Lei, L. , Wang, F. , Zang, K. , Lü, X. , Zhang, Z. , Yang, L. et al. Research on Air-sea Flux and Influencing Factors of Methane in a Typical Mariculture Along the Southeastern Coast of China: the Sansha Bay; [中国东南沿海典型养殖海湾：三沙湾海-气界面甲烷扩散通量及影响因素研究] . | Advances in Earth Science , 2024 , 39 (11) , 1156-1168 . |
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Measurements of dissolved organic carbon (DOC), nitrogen (DON), and phosphorus (DOP) concentrations are used to characterize the dissolved organic matter (DOM) pool and are important components of biogeochemical cycling in the coastal ocean. Here, we present the first edition of a global database (CoastDOM v1; available at https://doi.org/10.1594/PANGAEA.964012, L & oslash;nborg et al., 2023) compiling previously published and unpublished measurements of DOC, DON, and DOP in coastal waters. These data are complemented by hydrographic data such as temperature and salinity and, to the extent possible, other biogeochemical variables (e.g. chlorophyll a, inorganic nutrients) and the inorganic carbon system (e.g. dissolved inorganic carbon and total alkalinity). Overall, CoastDOM v1 includes observations of concentrations from all continents. However, most data were collected in the Northern Hemisphere, with a clear gap in DOM measurements from the Southern Hemisphere. The data included were collected from 1978 to 2022 and consist of 62 338 data points for DOC, 20 356 for DON, and 13 533 for DOP. The number of measurements decreases progressively in the sequence DOC > DON > DOP, reflecting both differences in the maturity of the analytical methods and the greater focus on carbon cycling by the aquatic science community. The global database shows that the average DOC concentration in coastal waters (average +/- standard deviation (SD): 182 +/- 314 mu mol C L-1; median: 103 mu mol C L-1) is 13-fold higher than the average coastal DON concentration (13.6 +/- 30.4 mu mol N L-1; median: 8.0 mu mol N L-1), which is itself 39-fold higher than the average coastal DOP concentration (0.34 +/- 1.11 mu mol P L-1; median: 0.18 mu mol P L-1). This dataset will be useful for identifying global spatial and temporal patterns in DOM and will help facilitate the reuse of DOC, DON, and DOP data in studies aimed at better characterizing local biogeochemical processes; closing nutrient budgets; estimating carbon, nitrogen, and phosphorous pools; and establishing a baseline for modelling future changes in coastal waters.
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| GB/T 7714 | Lonborg, Christian , Carreira, Catia , Abril, Gwenael et al. A global database of dissolved organic matter (DOM) concentration measurements in coastal waters (CoastDOM v1) [J]. | EARTH SYSTEM SCIENCE DATA , 2024 , 16 (2) : 1107-1119 . |
| MLA | Lonborg, Christian et al. "A global database of dissolved organic matter (DOM) concentration measurements in coastal waters (CoastDOM v1)" . | EARTH SYSTEM SCIENCE DATA 16 . 2 (2024) : 1107-1119 . |
| APA | Lonborg, Christian , Carreira, Catia , Abril, Gwenael , Agusti, Susana , Amaral, Valentina , Andersson, Agneta et al. A global database of dissolved organic matter (DOM) concentration measurements in coastal waters (CoastDOM v1) . | EARTH SYSTEM SCIENCE DATA , 2024 , 16 (2) , 1107-1119 . |
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通过水热法合成了纳米片状K/Zn/Sn/S金属硫化物(KZTS-NS)，并研究了KZTS-NS对Cs~+的吸附特性及机理。结果表明，KZTS-NS具有快速的吸附Cs~+动力学特性，仅需10 min即可达到吸附平衡，此时Cs~+去除率为96.50%;KZTS-NS对Cs~+的吸附等温线符合Langmuir模型，最大吸附容量为133.96 mg·g~(-1)，高于报道的其他吸附剂，且吸附是个自发、吸热且熵增的过程；KZTS-NS能够在pH为3～10内对Cs~+保持良好吸附效果；溶液中共存离子对KZTS-NS吸附效果的影响从高到低排序依次为Mg~(2+)>Ca~(2+)>Na~+>K~+，在自来水中、矿泉水、湖水和海水中KZTS-NS对Cs~+的去除率分别为42.14%、25.15%、14.14%和4.44%。此外，利用扫描电子显微镜(SEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)等技术对吸附铯离子(Cs~+)前后的KZTS-NS进行表征以揭示吸附机理。结果表明，KZTS-NS具有纳米片形貌，K、Zn、Sn和S元素在表面均匀分布，吸附Cs~+后形貌保持不变，并且XRD特征峰往低角度方向偏移，对应的晶面间距增大；由XPS图谱和定量分析可知，KZTS-NS对Cs~+的吸附机理为离子交换。总之，KZTS-NS能够快速、高效地去除废水中的Cs~+，具有较大的应用潜力。本研究将为放射性废水中Cs~+的处理提供技术参考和基础数据支撑。
Keyword ：
吸附 吸附 放射性污染 放射性污染 离子交换 离子交换 金属硫化物 金属硫化物 铯 铯
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| GB/T 7714 | 洪奇圣 , 穆景利 , 张艳 et al. K/Zn/Sn/S金属硫化物对水中铯离子的吸附去除性能及机理 [J]. | 环境工程学报 , 2024 , 18 (01) : 1-12 . |
| MLA | 洪奇圣 et al. "K/Zn/Sn/S金属硫化物对水中铯离子的吸附去除性能及机理" . | 环境工程学报 18 . 01 (2024) : 1-12 . |
| APA | 洪奇圣 , 穆景利 , 张艳 , 袁宗胜 , 杨丽阳 , 张铭栋 . K/Zn/Sn/S金属硫化物对水中铯离子的吸附去除性能及机理 . | 环境工程学报 , 2024 , 18 (01) , 1-12 . |
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该文将科技前沿和实验教学相结合，设计了水体DOM碳汇潜力解析探索型实验。该实验设计采集典型水体的DOM样品，开展生物降解培养实验，综合运用总有机碳分析仪、紫外-可见吸收光谱仪和分子荧光光谱仪，定量分析总体溶解有机碳（DOC）的生物可降解性，解析DOM中有色组分和不同类型荧光组分的降解转化特征。实验结果可用于环境DOM的碳汇潜力评估和机理解析。该实验有助于学生理解碳中和前沿科学理论，掌握现代仪器分析技术的原理、操作和数据处理分析方法，培养创新思维和实践能力。
Keyword ：
分子荧光光谱 分子荧光光谱 实验设计 实验设计 溶解有机质 溶解有机质 碳中和 碳中和 碳汇 碳汇
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| GB/T 7714 | 杨丽阳 , 王羽凡 , 陈苇 et al. 碳中和背景下水体溶解有机质碳汇潜力解析的实验设计 [J]. | 实验技术与管理 , 2024 , 41 (01) : 220-224 . |
| MLA | 杨丽阳 et al. "碳中和背景下水体溶解有机质碳汇潜力解析的实验设计" . | 实验技术与管理 41 . 01 (2024) : 220-224 . |
| APA | 杨丽阳 , 王羽凡 , 陈苇 , 朱卓毅 . 碳中和背景下水体溶解有机质碳汇潜力解析的实验设计 . | 实验技术与管理 , 2024 , 41 (01) , 220-224 . |
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The burial of sediment organic matter (SOM) in the estuary and shelf plays an important role in the global carbon cycle. However, it is challenging to determine the source, composition, and burial of SOM in the coastal sea, especially at the molecular level. This was explored in the coastal area outside the largest Yangtze River of China with multiple techniques including elemental and stable isotopic analysis, absorption spectroscopy, fluorescence excitation-emission matrices coupled with parallel factor analysis (EEMs-PARAFAC), and ultra-high resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). The end-member mixing analysis based on delta 13C and delta 15N showed a dominance of marine contribution (up to 70%) at most stations while the terrestrial contribution increased to >55% nearshore in summer at a high fluvial sediment flux. This was consistent with the offshore decreasing humic-like C1 and C2, humification index (HIX), %lignin-like compounds, and %CHO but increasing tryptophan-like C3, biological index (BIX), %protein-like compounds, and % CHOS from EEMs-PARAFAC and FT-ICR-MS analysis. The %clay correlated positively with SOM content, HIX, % lignin-like compounds, O/C, and modified aromaticity index (AImod) but correlated negatively with %C3, H/C, and the relative abundance of labile formulas (MLBL), while %silt showed contrasting correlations. These results indicated the fine clay sediments adsorbed more humified, aromatic, oxygenated, and terrestrial compounds that were probably more resistant to biodegradation and thus had a higher burial efficiency than those on the silty sediments. Principal component analysis based on SOM indices further revealed different characteristics of SOM in the nearshore, northern offshore, and southern offshore regions, which were probably dependent on the delivery by local current systems. Overall, these findings contributed to unraveling the source and molecular composition of SOM associated with different grain size sediments and local current delivery, which are fundamental for understanding the factors underlying carbon burial in the complex coastal environment.
Keyword ：
EEMs-PARAFAC EEMs-PARAFAC Estuary Estuary FT-ICR-MS FT-ICR-MS Sediment organic matter Sediment organic matter Stable isotope Stable isotope
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| GB/T 7714 | Zhang, Wenyi , Wang, Yufan , Fang, Futao et al. Characterization of sediment organic matter in the outer Yangtze River Estuary using stable isotopes, optical techniques, and FT-ICR-MS: Implications for the carbon burial mechanism [J]. | WATER RESEARCH , 2024 , 267 . |
| MLA | Zhang, Wenyi et al. "Characterization of sediment organic matter in the outer Yangtze River Estuary using stable isotopes, optical techniques, and FT-ICR-MS: Implications for the carbon burial mechanism" . | WATER RESEARCH 267 (2024) . |
| APA | Zhang, Wenyi , Wang, Yufan , Fang, Futao , Zhuang, Wan-E , Yang, Liyang , Zhu, Zhuoyi . Characterization of sediment organic matter in the outer Yangtze River Estuary using stable isotopes, optical techniques, and FT-ICR-MS: Implications for the carbon burial mechanism . | WATER RESEARCH , 2024 , 267 . |
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A nanosheet-like K/Zn/Sn/S metal sulfide (KZTS-NS) was synthesized by a hydrothermal method. The adsorption properties and mechanism of KZTS-NS towards Cs+ was investigated. The results showed that fast adsorption of Cs+ occurred by KZTS-NS with an equilibrium time of only 10 minutes and Cs+ removal rate of 96.50%. The adsorption isotherms were well fitted with the Langmuir model, and the calculated maximum adsorption capacity reached 133.96 mg·g−1, which was higher than other reported adsorbents. The adsorption of Cs+ by KZTS-NS was a spontaneous, endothermic, and entropy-increasing process. KZTS-NS had a good performance on Cs+ adsorption in the pH range of 3-10. The inhibitory effect of coexisting ions on Cs+ adsorption by KZTS-NS followed the sequence of Mg2+>Ca2+>Na+>K+. The removal rates of Cs+ by KZTS-NS in tap water, mineral water, lake water, and seawater were 42.14%, 25.15%, 14.14%, and 4.44%, respectively. The KZTS-NS before and after cesium ion (Cs+) adsorption was characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), etc. to reveal the Cs+ adsorption mechanism. Results showed that the nanosheet-like morphology of KZTS-NS remained unchanged before and after adsorption of Cs+. K, Zn, Sn, and S elements were evenly distributed on the surface of KZTS-NS. The XRD characteristic peaks after Cs+ adsorption shifted towards a lower 2θ value, corresponding to an increase in crystal plane spacing. The XPS spectra and quantitative analysis indicated that the adsorption mechanism of KZTS-NS for Cs+ was ion exchange. In summary, KZTS-NS could rapidly and efficiently remove Cs+ from wastewater and showed a great potential for further application. This study provides a technical reference and the basic data supports for the treatment of wastewater containing radioactive Cs+ ions. © 2024 Science Press. All rights reserved.
Keyword ：
adsorbent adsorbent cesium cesium ion exchange ion exchange metal sulfide metal sulfide radioactive contamination radioactive contamination
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| GB/T 7714 | Hong, Q. , Mu, J. , Zhang, Y. et al. Adsorptive removal performance and mechanism of cesium ion from aqueous solutions by a K/Zn/Sn/S metal sulfide; [K/Zn/Sn/S 金属硫化物对水中铯离子的吸附去除性能及机理] [J]. | Chinese Journal of Environmental Engineering , 2024 , 18 (1) : 1-12 . |
| MLA | Hong, Q. et al. "Adsorptive removal performance and mechanism of cesium ion from aqueous solutions by a K/Zn/Sn/S metal sulfide; [K/Zn/Sn/S 金属硫化物对水中铯离子的吸附去除性能及机理]" . | Chinese Journal of Environmental Engineering 18 . 1 (2024) : 1-12 . |
| APA | Hong, Q. , Mu, J. , Zhang, Y. , Yuan, Z. , Yang, L. , Zhang, M. . Adsorptive removal performance and mechanism of cesium ion from aqueous solutions by a K/Zn/Sn/S metal sulfide; [K/Zn/Sn/S 金属硫化物对水中铯离子的吸附去除性能及机理] . | Chinese Journal of Environmental Engineering , 2024 , 18 (1) , 1-12 . |
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Biodegradable dissolved organic carbon (BDOC) constitutes the most labile fraction of dissolved organic matter (DOM), which also functions as a source of CO2 emissions from inland waters. However, no systematic review is available on DOM indicators of BDOC and CO2 production potential. Optical and molecular indices can be used to track small changes in DOM composition during biodegradation. In this review, we identified four different methods for measuring BDOC together with their strengths and limitations. In addition, we discuss the potential of using documented optical indices based on absorption and fluorescence spectroscopy and molecular indices based on Fourier transform ion cyclotron mass spectrometry as proxies for estimating BDOC and biodegradationinduced CO2 production based on previously reported relationships in the literature. Many absorbance- and fluorescence-based indices showed inconsistent relationships with BDOC depending on watershed characteristics, hydrology, and anthropogenic impacts. Nevertheless, several indices, including specific UV absorbance at 254 nm (SUVA254), humification index (HIX), and terrestrial humic-like fluorescent DOM (FDOM) components, tended to have negative relationships with BDOC in tropical and temperate watersheds under baseflow or drought periods. Protein-like FDOM exhibited the strongest correlation with BDOC in different systems, except during storms and flood events. Despite the limited number of studies, DOM molecular indices exhibited consistent relationships with BDOC, suggesting that the relative abundance of aliphatic formulas and the molecular lability index could act as reliable proxies. The DOM optical indices explain up to 96% and 78% variability in BDOC and CO2, respectively; nonetheless, there were limited studies on molecular indices, which explain up to 74% variability in BDOC. Based on literature survey, we recommend several sensitive indices such as SUVA254, HIX, and terrestrial humic- and protein-like FDOM, which could be useful indicators of BDOC and dissolved CO2 in inland water. Future research should incorporate a wider range of geographic regions with various land use, hydrology, and anthropogenic disturbances to develop system- or condition-specific DOM optical or molecular proxies for better prediction of BDOC and CO2 emissions.
Keyword ：
Biodegradable dissolved organic carbon Biodegradable dissolved organic carbon CO 2 emissions CO 2 emissions Dissolved organic matter Dissolved organic matter Fluorescence Fluorescence FT-ICR-MS FT-ICR-MS
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| GB/T 7714 | Begum, Most Shirina , Park, Ji-Hyung , Yang, Liyang et al. Optical and molecular indices of dissolved organic matter for estimating biodegradability and resulting carbon dioxide production in inland waters: A review [J]. | WATER RESEARCH , 2023 , 228 . |
| MLA | Begum, Most Shirina et al. "Optical and molecular indices of dissolved organic matter for estimating biodegradability and resulting carbon dioxide production in inland waters: A review" . | WATER RESEARCH 228 (2023) . |
| APA | Begum, Most Shirina , Park, Ji-Hyung , Yang, Liyang , Shin, Kyung Hoon , Hur, Jin . Optical and molecular indices of dissolved organic matter for estimating biodegradability and resulting carbon dioxide production in inland waters: A review . | WATER RESEARCH , 2023 , 228 . |
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Dissolved organic matter (DOM) is very important in determining the speciation, behaviors, and risk of metal pollutants in aquatic ecosystems. Photochemical and microbial degradation are key processes in the cycling of DOM, yet their effects on the DOM-Pb(II) interaction remain largely unknown. This was studied by examining the complexation of river DOM with Pb(II) after degradation, using fluorescence quenching titration and excitationemission matrices-parallel factor analysis (EEMs-PARAFAC). Three humic-like and two protein-like components were identified, with strong removals of humic-like components and decreasing average molecular weight and humification degree of DOM by photo- and photo-microbial degradation. The changes in humic-like abundance and structure resulted in notable weakening of their interaction with Pb(II). The tryptophan-like C2 was also mainly removed by photo-degradation, while the tyrosine-like C3 could be either removed or accumulated. The Pb(II)-binding of protein-like components was generally weaker but was enhanced in some degradation groups, which might be related to the lowering competition from humic-like components. The binding parameters correlated significantly with the DOM indices, which were dominated by photo-degradation for humic-like components but by seasonal variations for the tyrosine-like component. These results have implications for understanding the key mechanisms underlying the variability of the DOM-metal interaction in aquatic environments.
Keyword ：
Dissolved organic matter Dissolved organic matter EEMs-PARAFAC EEMs-PARAFAC Microbial degradation Microbial degradation Pb(II) Pb(II) Photo-degradation Photo-degradation
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| GB/T 7714 | Yang, Liyang , Chen, Linwei , Zhuang, Wan-E et al. Unveiling changes in the complexation of dissolved organic matter with Pb (II) by photochemical and microbial degradation using fluorescence EEMs-PARAFAC [J]. | ENVIRONMENTAL POLLUTION , 2023 , 341 . |
| MLA | Yang, Liyang et al. "Unveiling changes in the complexation of dissolved organic matter with Pb (II) by photochemical and microbial degradation using fluorescence EEMs-PARAFAC" . | ENVIRONMENTAL POLLUTION 341 (2023) . |
| APA | Yang, Liyang , Chen, Linwei , Zhuang, Wan-E , Zhu, Zhuoyi . Unveiling changes in the complexation of dissolved organic matter with Pb (II) by photochemical and microbial degradation using fluorescence EEMs-PARAFAC . | ENVIRONMENTAL POLLUTION , 2023 , 341 . |
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